Which of the following is a characteristic of all chordates at some point during their life cycle?
A) jaws
B) post-anal tail
C) four-chambered heart
D) vertebrae
Answer: B
Which of the following is a characteristic of all chordates at some point during their life cycle?
A) jaws
B) post-anal tail
C) four-chambered heart
D) vertebrae
Answer: B